Storage and handling of chemical substances



United States Patent 3,462,008 STORAGE AND HANDLING OF CHEMICALSUBSTANCES Geoffrey T. Tibbs, Hill Croft, 58 High Lane, Chester County,Woodley, England No Drawing. Filed June 26, 1967, Ser. No. 648,934

Int. Cl. B65d 79/00 US. Cl. 20647 1 Claim ABSTRACT OF THE DISCLOSUREThis invention relates to improvements in the storage of two or moreinteractive substances in a single container.

Interactive materials for use when mixed as cements, adhesives, mastics,sealing or other compounds have been packed in a single container andseparated therein by an inert material which is compatible with theactive materials but which does not react separately with either ofthem.

It has been found that it is not necessary to employ an inert materialto separate the interactive materials provided care is taken in thepreparation of, and composition of the interactive materials.

The object of the invention is that the compositions of the twointeractive components be chosen so that although they will reactnormally when mixed together, when merely placed in contact as twoseparate layers in a tin, bottle, or other container, they will notreact sufficiently at the interface to detract from the final compoundobained by mixing the contents of the tin, bottle, or other container.

The invention comprises a method for the packing or storage ofinteractive materials in a single container in layers or concentriccylinders in which the active materials are gelled or stiffened beforepacking to reduce reaction at the interfaces or interface below thatwhich will damage the compound produced when the active materials aresubsequently mixed.

In carrying out the invention two interactive materials are packed inthe same container by selecting their composition so that substantiallyno reaction occurs at the interface during storage to detract from thefinal compound obtained on mixing the two interactive materials.

This stability in the package is obtained by having the reactivecompounds in a suitable physical form so that no or substantially noreaction takes place at the interface(s). The compounds are renderedinactive at the interface by the introduction of a gelling or stiffeningagent into the component layers and the active components may be dilutedwith a suitable plasticiser, diluent, or extender which is compatiblewith the active ingredients but at the same time will not react withthem, whilst reducing their concentration in the layer.

The invention will be described with reference to the following example:

Surface coated calcium carbonate (gelling agent) 20.0

The above is packed as one layer with the following as the second layer.

3,462,008 Patented Aug. 19, 1969 "ice Parts Dibutyl phthalate (diluent)3.9 Bentone (gelling agent) 0.3 Acetone (to gel the bentone) u 0.15 Leadperoxide (active agent) 4.5 Stearic acid (retardent) Q 0.15

The two layers when packed together are stable in the tin for areasonable time, but when thoroughly mixed together cure in a matter ofhours to give a rubbery sealant.

To use such a composition it is only necessary to mix by hand ormechanical means the contents of the tin, bottle or other containerwithout the removal of any intervening barrier or partition ,or thetransfer of material from one container to another.

The different components may be arranged in any suitable manner withinthis container, e.g. in vertical or horizontal layers, concentriccylinders, etc., though it is desirable that the arrangement be suchthat the area of contact between the active components is not undulyhigh in relation to the volumes of these components.

The mixing device may, if desired, be already inserted in the containeras supplied to the user and may take several forms: a wire helix, apaddle stirrer, or a simple metal or plastics plate, etc. This packagemay be used in the building and other trades for the application of gungrade material. For use with the standard type of gun, the stirrer ormixing device is withdrawn, before use and this may conveniently, thoughnot necessarily, be done through a suitably shaped hole in the end ofthe cartridge, designed to ensure that the smallest possible quantity ofmaterial is removed on the stirrer or mixing device.

In another form the materials are packed in a flexible but toughsausage-like skin or container, and the contents mixed immediatelybefore use by manipulating the container, for instance by twisting orrolling it. One corner, may then be cut off and the contents squeezedout, through an added nozzle if necessary. Alternatively, theingredients suitably stiffened may be extruded in the form of concentriccylinders which may be mixed by rolling in the hands or otherwisemanipulating them. This is very convenient for caulking tapes.

What I claim is:

1. A packaging unit, comprising, in combination, a container; a gelledbody of a first component comprising a mixture of polysulphide, silica,titanium oxide and calcium carbonate; and a gelled body of a secondcomponent comprising a mixture of dibutyl phthalate, bentone, acetone,lead peroxide and stearic acid, said mixtures being capable of reactingwith each other when intimately mixed and being so proportioned thatupon such mixing a rubber-like material is obtained, said bodies beinglocated in said container adjacent to and in contact with each other,whereby, prior to said mixing, reaction between said two components atthe interface between said two bodies is substantially prevented due tothe jelled condition of said bodies, without requiring interposition ofa third body of different composition.

References Cited UNITED STATES PATENTS 2,791,327 5/1957 Sparks et al.20684 2,862,616 12/1958 Capozzi et al 20647 2,982,396 5/1961 Shihadeh206-47 3,077,262 2/1963 Gaste 20647 WILLIAM T. 'DIXSON, JR., PrimaryExaminer US. Cl. X.R.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No, DatedAugust 19,

Inventor(s) offrey T. Tibbs It is certified that error appears in theaboveidentified patent and that said Letters Patent are hereby correctedas shown below:

In the heading to the printed specification, line 5 after "England"insert assignor to FEB (Great Britain) Limited, Manchester, England, aBody Corporate of Great Britain Signed and sealed this 3rd day ofNovember 1970 (SEAL) Attest:

EDWARD M.FLETCHER,JR.

WILLIAM E SCHUYLER, JR. Attesting Officer Commissioner of Patents

